A man present to STD clinic with urethritis and urethetral discharge. Gram stain show numerous pus cell but no microorganism. Culture is negative on blood media. Which of the following is most likely causative agent?
Chlamydia
trachomatis
Vibrio genus involves many species, only some serotypes of V.cholerae are pathogens of cholera. Which of the following causative agents of cholera?
V.cholerae serogroups non O1 and non O139
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